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Relationships between Organic Loading and Some Properties of Activated Sludge
Author(s) -
Barbusiński Krzysztof,
Miksch Korneliusz
Publication year - 1997
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199707)69:3<357::aid-jctb720>3.0.co;2-v
Subject(s) - activated sludge , substrate (aquarium) , environmental science , dehydrogenase , chemistry , biological system , materials science , environmental engineering , chemical engineering , enzyme , biology , ecology , biochemistry , sewage treatment , engineering
Investigations into changes in dehydrogenase activity, sludge volume index, and floc size were carried out in the conditions of dynamic substrate overload. An analysis of the changes of particular parameters in the load function is especially useful in these conditions. The analysis takes into account chronological succession of the obtained results. Interrelationships between the considered parameters were observed. Although dehydrogenase activity showed the greatest precision in reflecting changes in organic loading and substrate removal rate, it was impossible on this basis to predict negative changes in the structure of flocs. However, measurements of floc size made this possible. It has been shown that the average size of flocs and their size distribution are important parameters for the proper control of the activated sludge process. It has also been stated that only an assessment of both biochemical and physical properties gives the correct picture of changes taking place in activated sludge. © 1997 SCI.